Hello there I've got a Geforce 6800 GT AGP for my G5. Everything runs well so far. But when I try and play the game "Cube III Sauerbraten" at high setting (even though this card should handle a game like that without any issues) it crashes very quickly. I also got an error message when I was trying to use the Cinebench 11.5 Graphic Benchmark. I've done several hardware tests (Apple Hardware Test, Apple System Diagnostics) and according to that,everything seems to be fine. I really don't know what's going on. I don't really wanna put that Radeon 9600 64MB backin my machine cause it kinda sucks.. Does have anyone more experience with that? Maybe it's not necessarily a PowerPC specific issue.